These two characters are Shenhe and Yunjin. Ubatcha didn’t mention his source for the two characters arriving. There is no known appearance of Shenhe, so no name is also mentioned in the leaker circles. A fake photo posted by /r/Genshin-Impact_Leaks claimed to be showing Shenhes model in-game but was quickly debunked. Ubatcha posted a leak in an Uncle Dumb Dumb, a Russian leaker known as an insider into Genshin Impact. He said that Kamisato Ayato, his brother Ayaka, would appear after Version 2.5. (He added that Yae Miko was supposed to appear on version 2.5). A final leak from Ubatcha also stated that a new area is arriving in the latest version of 2.4, a similar type of archipelago. Dragonspine was a large area and expanded into the Mondstadt area, and Ubatcha expects a ship from 22.4. Enkanomiya is a subordinate area situated on the west coast of Watatsumi. “Vor the beginning, the original release of The Chasm, a Liyue expansion, will arrive in version 2.4. Remember that as with any leak, they should be taken with a grain of salt. MiHoYo hasn’t released anything official information about the release date of these characters.
